In his most damaging act of health care sabotage yet, President Trump signed an executive order today aimed at sabotaging the Affordable Care Act.

Since Republicans in Congress failed to gut the ACA on their own, Trump is taking Americans’ health care into his own hands. This executive order will raise health care premiums, deny access to affordable coverage for millions, and could result in the eventual collapse of the individual health insurance market.

Here’s what you need to know about Trump’s latest attempt to sabotage the ACA. His executive order will…

Decrease protections for people with pre-existing conditions, making coverage unaffordable.

Destabilize the ACA marketplaces by creating separate markets for healthy people and sick people or those with preexisting conditions.

Allow employers and health insurers to sell insurance that doesn’t cover basic health care needs – and then charge astronomical rates when you get sick.

Return power to insurance companies, who would be able to charge more for less care, and sell policies that don’t cover things like prescription drugs, hospitalizations, or maternity care.

We can’t let this executive order go through. Congress must stand up to Trump’s sabotage and continue bipartisan negotiations to help stabilize the insurance marketplace. Make sure they know where you stand.